@@ -68,6 +68,16 @@ config MOUSE_PS2_SYNAPTICS
 
 	  If unsure, say Y.
 
+config MOUSE_PS2_CYPRESS
+       bool "Cypress PS/2 mouse protocol extension" if EXPERT
+       default y
+       depends on MOUSE_PS2
+       help
+         Say Y here if you have a Cypress PS/2 Trackpad connected to
+         your system.
+
+         If unsure, say Y.
+
 config MOUSE_PS2_LIFEBOOK
 	bool "Fujitsu Lifebook PS/2 mouse protocol extension" if EXPERT
 	default y

@@ -32,3 +32,4 @@ psmouse-$(CONFIG_MOUSE_PS2_LIFEBOOK)	+= lifebook.o
 psmouse-$(CONFIG_MOUSE_PS2_SENTELIC)	+= sentelic.o
 psmouse-$(CONFIG_MOUSE_PS2_TRACKPOINT)	+= trackpoint.o
 psmouse-$(CONFIG_MOUSE_PS2_TOUCHKIT)	+= touchkit_ps2.o
+psmouse-$(CONFIG_MOUSE_PS2_CYPRESS)	+= cypress_ps2.o

@@ -34,6 +34,7 @@
 #include "touchkit_ps2.h"
 #include "elantech.h"
 #include "sentelic.h"
+#include "cypress_ps2.h"
 
 #define DRIVER_DESC	"PS/2 mouse driver"
 

@@ -759,6 +760,28 @@ static int psmouse_extensions(struct psmouse *psmouse,
 	}
 
 /*
+ * Try Cypress Trackpad.
+ * Must try it before Finger Sensing Pad because Finger Sensing Pad probe
+ * upsets some modules of Cypress Trackpads.
+ */
+	if (max_proto > PSMOUSE_IMEX &&
+			cypress_detect(psmouse, set_properties) == 0) {
+		if (cypress_supported()) {
+			if (cypress_init(psmouse) == 0)
+				return PSMOUSE_CYPRESS;
+
+			/*
+			 * Finger Sensing Pad probe upsets some modules of
+			 * Cypress Trackpad, must avoid Finger Sensing Pad
+			 * probe if Cypress Trackpad device detected.
+			 */
+			return PSMOUSE_PS2;
+		}
+
+		max_proto = PSMOUSE_IMEX;
+	}
+
+/*
  * Try ALPS TouchPad
  */
 	if (max_proto > PSMOUSE_IMEX) {

@@ -896,6 +919,15 @@ static const struct psmouse_protocol psmouse_protocols[] = {
 		.alias		= "thinkps",
 		.detect		= thinking_detect,
 	},
+#ifdef CONFIG_MOUSE_PS2_CYPRESS
+	{
+		.type		= PSMOUSE_CYPRESS,
+		.name		= "CyPS/2",
+		.alias		= "cypress",
+		.detect		= cypress_detect,
+		.init		= cypress_init,
+	},
+#endif
 	{
 		.type		= PSMOUSE_GENPS,
 		.name		= "GenPS/2",

@@ -95,6 +95,7 @@ enum psmouse_type {
 	PSMOUSE_ELANTECH,
 	PSMOUSE_FSP,
 	PSMOUSE_SYNAPTICS_RELATIVE,
+	PSMOUSE_CYPRESS,
 	PSMOUSE_AUTO		/* This one should always be last */
 };